Two NASA and one European spacecraft that obtained the first up-close observations of a comet flyby of Mars on Oct. 19, have gathered new information about the basic properties of the comet's nucleus and directly detected the effects on the Martian atmosphere. Read More

Repeated high-resolution observations made by NASA's Mars Reconnaissance Orbiter (MRO) indicate the gullies on Mars' surface are primarily formed by the seasonal freezing of carbon dioxide, not liquid water. Read More

Researchers have discovered on the Red Planet the largest fresh meteor-impact crater ever firmly documented with before-and-after images. The images were captured by NASA's Mars Reconnaissance Orbiter. Read More

Scientists using NASA's Curiosity Mars rover are eyeing a rock layer surrounding the base of a small butte, called "Mount Remarkable," as a target for investigating with tools on the rover's robotic arm. Read More

An observation made last month by NASA's Mars Reconnaissance Orbiter shows the Curiosity rover and its tracks on the Martian surface. Read More

Related Information

Mars in a Minute: How Do You Get to Mars?

What does it take to get a spacecraft from Earth all the way to Mars? There are a few key things to consider, as explained in this 60-second video from NASA's Jet Propulsion Laboratory.
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Exposed Ice in a Fresh Crater

At the center of this view of an area of mid-latitude northern Mars, a fresh crater about 6 meters (20 feet) in diameter holds an exposure of bright material, blue in this false-color image.
Image Credit: NASA/JPL-Caltech/University of Arizona